coact /kəʊˈakt/adjective 1verb 2forms 5 adjective1 •(no longer used) Forced, constrained, done under compulsion.too much solitariness […] is either coact, enforced, or else voluntary. — 2001 verb2 •(rare) To work together. •(no longer used) To compel, constrain, force.The faith and service of Christ ought to be voluntary and not coacted. — 1563 formscoacted · coacting · coacts · more coact · most coact